Hertzsprung Rusell Diagram KLT
... Stars that look to us as though they are near each other, may intact be very far away from each other. Distant but very bright stars look similar to close but dim stars. ...
... Stars that look to us as though they are near each other, may intact be very far away from each other. Distant but very bright stars look similar to close but dim stars. ...
Basics of Astrophysics
... signal which must be close enough to the astronomical source to pass through the same atmosphere. It is not easy to find such bright stars and laser guide stars are used. The image quality ...
... signal which must be close enough to the astronomical source to pass through the same atmosphere. It is not easy to find such bright stars and laser guide stars are used. The image quality ...
DEU 5e Chapter 1 Lecture PPT
... rotate around two axis points, the north and south celestial poles, which are located directly above the Earth’s poles. Between these is the celestial equator, which divides the celestial sphere into northern and southern hemispheres. We define the position of an object on the celestial sphere ...
... rotate around two axis points, the north and south celestial poles, which are located directly above the Earth’s poles. Between these is the celestial equator, which divides the celestial sphere into northern and southern hemispheres. We define the position of an object on the celestial sphere ...
The Sun and the Stars
... Henry Draper Catalogue. Extended version of HD catalogue contains spectra of 225,000 stars down to 9th magnitude. Annie Jump Cannon – spectra are dominated by lines of Hydrogen and Helium and small amounts of metals. Original scheme had classes OBAFGKM (now extended to L, T and Y dwarfs) Most import ...
... Henry Draper Catalogue. Extended version of HD catalogue contains spectra of 225,000 stars down to 9th magnitude. Annie Jump Cannon – spectra are dominated by lines of Hydrogen and Helium and small amounts of metals. Original scheme had classes OBAFGKM (now extended to L, T and Y dwarfs) Most import ...
IND 6 - 1 Stars and Stellar Evolution In order to better understand
... A low mass star (less than 8 times the mass of our Sun ( < 8 Msun)) eventually ejects its outer layers to produce a planetary nebula. The now naked stellar core remaining is called a white dwarf (because it is very hot but dim). In contrast, a high-mass star, more than 8 times the mass of our Su ...
... A low mass star (less than 8 times the mass of our Sun ( < 8 Msun)) eventually ejects its outer layers to produce a planetary nebula. The now naked stellar core remaining is called a white dwarf (because it is very hot but dim). In contrast, a high-mass star, more than 8 times the mass of our Su ...
Jupiter
... beyond the orbit of the moon Amalthea. It is probably composed of dust particles less than 10 microns in diameter about the size of cigarette smoke particles. It extends to an outer edge of about 129,000 km from the center of the planet and inward to about 30,000 km .The "Main" ring is about 7,000 k ...
... beyond the orbit of the moon Amalthea. It is probably composed of dust particles less than 10 microns in diameter about the size of cigarette smoke particles. It extends to an outer edge of about 129,000 km from the center of the planet and inward to about 30,000 km .The "Main" ring is about 7,000 k ...
iaf2001_paper (doc - 1.8 MB)
... the presence of extra-solar planets when they transit. The detectors are 4 CCD 2048x2048 pixels with a field of view of 8°2. Half is dedicated to the extra-solar planets program. By adapting both the integration time and the focus conditions, but without any change in the mission sizing, luminous fl ...
... the presence of extra-solar planets when they transit. The detectors are 4 CCD 2048x2048 pixels with a field of view of 8°2. Half is dedicated to the extra-solar planets program. By adapting both the integration time and the focus conditions, but without any change in the mission sizing, luminous fl ...
Document
... • RR Lyrae variables used like this to find our place in the Galaxy. • Distances that can be reached depend on the intrinsic brightness of the standard candle – and the limiting magnitude of your telescope ...
... • RR Lyrae variables used like this to find our place in the Galaxy. • Distances that can be reached depend on the intrinsic brightness of the standard candle – and the limiting magnitude of your telescope ...
Review 3 (11-18-10)
... size of Orlando. Neutrons stop further collapse. M between 1.4 and 3 solar masses. Some neutron stars can be detected as pulsars • Black Holes: M more than 3 solar masses. Nothing stops the collapse and produces an object so compact that escape velocity is higher than speed of light; hence, not even ...
... size of Orlando. Neutrons stop further collapse. M between 1.4 and 3 solar masses. Some neutron stars can be detected as pulsars • Black Holes: M more than 3 solar masses. Nothing stops the collapse and produces an object so compact that escape velocity is higher than speed of light; hence, not even ...
Chapter 6: Stellar Evolution (part 2)
... (Isolated) stars normally undergo the AGB phase, accounting for most of the WDs observed with their mass peaking at 0.67 ± 0.21 M (Zorotovic et al. 2011). ...
... (Isolated) stars normally undergo the AGB phase, accounting for most of the WDs observed with their mass peaking at 0.67 ± 0.21 M (Zorotovic et al. 2011). ...
PPT 15MB - HubbleSOURCE
... environment: “fingers”, bubbles, outflows, etc. Amazing network of long, straight filaments seen in great detail for first time in ionized gas; some of them follow magnetic field lines; New compact nebulae discovered with young massive stars, ranging from early to late stages of star formation ...
... environment: “fingers”, bubbles, outflows, etc. Amazing network of long, straight filaments seen in great detail for first time in ionized gas; some of them follow magnetic field lines; New compact nebulae discovered with young massive stars, ranging from early to late stages of star formation ...
File - We All Love Science
... • The characteristics of white dwarfs and why there is an upper limit to their mass • The characteristics of neutron stars • Why pulsars rotate so rapidly • How gravity can prevent an object from emitting any light, creating a “black hole” • The nature of the curvature at the edge of a black hole • ...
... • The characteristics of white dwarfs and why there is an upper limit to their mass • The characteristics of neutron stars • Why pulsars rotate so rapidly • How gravity can prevent an object from emitting any light, creating a “black hole” • The nature of the curvature at the edge of a black hole • ...
Rotational Line Broadening Gray Chapter 18
... Measurement of Rotation • Use intrinsically narrow lines • Possible to calibrate half width with v sin i, but this will become invalid in very fast rotators that become oblate and gravity darkened • Gray shows that G(Δλ) has a distinctive appearance in the Fourier domain, so that zeros of FT are re ...
... Measurement of Rotation • Use intrinsically narrow lines • Possible to calibrate half width with v sin i, but this will become invalid in very fast rotators that become oblate and gravity darkened • Gray shows that G(Δλ) has a distinctive appearance in the Fourier domain, so that zeros of FT are re ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.